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Title: Apparatus for thermally evolving chemical analytes from a removable substrate

Abstract

Method and apparatus suited to convenient field use for heating a porous metallic substrate swiped on the surface of an article possibly bearing residue of contraband or other target chemical substances. The preferred embodiment of the device includes means for holding the swiped substrate between electrodes bearing opposite electrical charges, thereby completing an electrical circuit in which current can flow through the porous metallic substrate. Resistance causes the substrate to heat, thus driving adherent target chemicals, if present, into a space from which they are carried via gas flow into a detector such as a portable IMS for analysis.

Inventors:
;
Issue Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174349
Patent Number(s):
6,572,825
Application Number:
09/410,976
Assignee:
Sandia Corporation (Albuquerque, NM) SNL-L
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE

Citation Formats

Linker, Kevin L., and Hannum, David W. Apparatus for thermally evolving chemical analytes from a removable substrate. United States: N. p., 2003. Web.
Linker, Kevin L., & Hannum, David W. Apparatus for thermally evolving chemical analytes from a removable substrate. United States.
Linker, Kevin L., and Hannum, David W. Tue . "Apparatus for thermally evolving chemical analytes from a removable substrate". United States. https://www.osti.gov/servlets/purl/1174349.
@article{osti_1174349,
title = {Apparatus for thermally evolving chemical analytes from a removable substrate},
author = {Linker, Kevin L. and Hannum, David W.},
abstractNote = {Method and apparatus suited to convenient field use for heating a porous metallic substrate swiped on the surface of an article possibly bearing residue of contraband or other target chemical substances. The preferred embodiment of the device includes means for holding the swiped substrate between electrodes bearing opposite electrical charges, thereby completing an electrical circuit in which current can flow through the porous metallic substrate. Resistance causes the substrate to heat, thus driving adherent target chemicals, if present, into a space from which they are carried via gas flow into a detector such as a portable IMS for analysis.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {6}
}

Patent:

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